I shop at LightInTheBox regularly - mostly, electronics, parts, gadgets. Never had a real problem - once (many years ago) has some sort of an issue with the order and it was resolved easily and quickly.
Free shipping from China takes a while - that is to be expected, of course. If you want it faster, pay for the faster service instead of b*tching later.
Just bought a swimsuit for my daughter (my first clothing purchase from them, I think). She absolutely loves it. Fairly thin fabric but seems to be of good quality. She checked and it does not go transparent when wet. And a very unique design. Now my other daughters want one!